WE MADE TARGET WHP!!!! (almost...)

[Z3_GoCar]

Shout out to Matt Kessler from Kessler Engineering (http://www.kesslerengineering.com/Dyno/Dyno.htm) and Mark from Applied Flow for all their smarts, help and work in getting "the little red civic" more powerful than ever!

Taget whp for the civic: 132.8 whp

We recorded 132.5 whp & 114 wtq, noon June 9, 2011!

Sweet Jezus!

You do realize that's like 152 whp on a dynojet...

40% engine multiplier coming soon! LOL

Sounds like it's going to be a 50% adder, or a reclass to ITS

[mossaidis]

You do realize that's like 152 whp on a dynojet...

Sounds like it's going to be a 50% adder, or a reclass to ITS

Really good numbers, and on a Dynapack unit too.

No more from you, "Z3_GoCar"... BANNED! j/k

dynojets read 10% above packs and 10% above SAE reality - true? no idea.

[Z3_GoCar]

No more from you, "Z3_GoCar"... BANNED! j/k

dynojets read 10% above packs and 10% above SAE reality - true? no idea.

Get the smilie too

There's a couple of threads in the tech section, the jet's generally 13% greater than a pack's reading. What does it mean? Don't know, and I've been thinking about it all morning. As far as tuning goes, the pack is the way to go and that's why I continue to use my dyno shop.

[JeffYoung]

That's just not correct (about dynojets reading higher than dynapacks).

All dynos have a variety of operator input corretion factors that can skew the results in any direction the owner wants. I've seen paks read lower than jets, and vicey versa.

Only thing you can tune against is the same dyno.

For the ITAC, we have to look long and hard at dyno data to make sure we get things right.

[Z3_GoCar]

That's just not correct (about dynojets reading higher than dynapacks).

All dynos have a variety of operator input corretion factors that can skew the results in any direction the owner wants. I've seen paks read lower than jets, and vicey versa.

Only thing you can tune against is the same dyno.

For the ITAC, we have to look long and hard at dyno data to make sure we get things right.

Agreed that the "tuning paramaters" can be used to skew the dynojet's lower, but I'm sure you remember replying to this....

I typed this up for another forum last year. Enjoy.

Preface:
Ok I'm going to supply some information based upon my 13+years of working with chassis dynos. I'm going to keep this as factual as possible w/ as little bias as possible, I invite any of the other dyno reps to posts or shop owners who have a dyno.

First off I will state my current position. I am the southeastern USA sales rep for Dyno Dynamics. In the past I have worked w/ dyno from various mfgs. All of these dynos I have had extensive experience with. Dyno Dynamics, Dynojet, Superflow, and Mustang. I have working knowledge of Roto-Pak, Dyna-Pak, Bosch, and Maha.

This is key, an number is just that, a number.
It doesn't matter wether a dyno reads 400hp on 1 mfg's dyno or 3 apples, 2 oranges, and a kumquat on some other mfg's dyno. A dyno is a tuning tool. The purpose of a dyno is to simulate real world conditions to help tuners. What is important is to see how change made to the vehicle affect it's power output. So your tuner makes a change and now you make 405hp or 3 apples, 2 oranges, and 2 kumquats.
A gain is a gain, a loss is a loss, period.
Numbers are only good for pissing matches and bench racing.

Now on to the comparison:
Here is how the various mfg dynos relate to one another. This is just a comparison of numbers output assuming the same vehicle on the dyno.

The industry leader in number output by far is Dynojet. Their marketing in the mid-90's specifically used the larger output numbers as a selling item.

Next is Mustang, generally about 7% less than Dynojet numbers.

Superflow is about 3% less than Mustang.

Dyna-Pak and Dyno Dynamics are about 3% less than Superflow.

Ok lets make this point again to make sure it's clear. The SAME CAR on the DIFFERENT DYNOS. So our test vehicle output on the various dynos are as follows:

Dyno Dynamics 200hp
Superflow 206hp
Mustang 214hp
Dynojet 226hp

This is assuming the dyno operator has not changed any of the parameters of the dyno. All of the dynos software incorporates parameters that are operator definable. These adjust the displayed power output. In other words the operator can "adjust" the output of the dyno to display any number desired. By adjusting weather station parameters, external corrections factors, inertia compensation, or any one of a dozen different factors the output number can be modified. The number can be modified to display anything from 10% of measure power to 300%. So our 200hp example vehicle can after a pull display peak power of 20hp or 600hp w/ just a couple of keystrokes.

Key Fact: Just because the dyno spits out a number, it doesn't means squat without knowing ALL of the correction factors.

Some dyno operators adjust the output of their dynos to closely match the highest numbers in the industry, Dynojet. This is not an attempt to defraud the customer. It is just that customers have a false notion that a bigger number means more power. But as you have seen, numbers mean nothing.

If anyone has any questions about dyno operations or which type of dyno is better or worse please start another thread & I will be more than happy to answer any questions.

[JeffYoung]

Yep, that was 4 years ago, I've done a fair amount of reading on dynos since then, and while it is correct on the differences on how dynos operate, it's totally wrong on "set in stone" differences between what a motor reads on this dyno or that.

Seriously.

It is NOT accurate, in anyway, to say that a particular type of dyno always reads higher or lower than another.

Agreed that the "tuning paramaters" can be used to skew the dynojet's lower, but I'm sure you remember replying to this....

[Andy Bettencourt]

Yep, that was 4 years ago, I've done a fair amount of reading on dynos since then, and while it is correct on the differences on how dynos operate, it's totally wrong on "set in stone" differences between what a motor reads on this dyno or that.

Seriously.

It is NOT accurate, in anyway, to say that a particular type of dyno always reads higher or lower than another.

True, we have had SM's validate our Pack on Jets and they were within 1%. We also have developed a 'correction factor with the cooling water on and off.